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M# = 42MF438B/F7 S# = YA2A0833016930 TV HAS GOOD SOUND. BUT CAN JUST SEE A PIC. BEHIND COLAR LINES THAT CHANGS BUT COVERS THE HOLE SCREEN.

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The problem you have mentioned is caused by a faulty LCD controller AKA T-con. This part is inexpensive and easy to replace. Remove the back cover and look for a board that looks like the one in the link. It should have a part number printed on it. If it matches, then you can purchase it. It costs 18$
http://www.shopjimmy.com/lg-philips-6871l-4201a-t-con-board.htm
If it does not match then get me the part number of the one that's in your set and I will help you find a replacement.

Sai.

Posted on Dec 29, 2010

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Posted on Jan 02, 2017

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1 Answer

Remote not work


If remote control is alright, the problem should be with the remote sensor inisde the TV. This is a three solder terminal component, can be located just behind the infrared sensor window at the front panel of the TV. You should have to open the TV, and unscrew out the PCB that this component have soldered in.c40243d8-cf4c-4923-b01c-275b76413f28.jpg
297f57d3-e54d-4a39-9705-1b60be54ed8c.jpg23707d23-08b4-4207-8360-4ae03fdb70ea.jpgThe component will look somewhat like these. If you wish to get some details, http://electronicshelponline.blogspot.com/ Pull up older posts.

Dec 12, 2013 | Televison & Video

1 Answer

Magnavox 42MF438B/F7 power light blinks for several minutes then goes solid but still no pic. cannot power box off with remote or power button on tv


1) you must open the remote code, and resolder all points colder points solder.
2) clean any keypads contacts, with special spray contact cleaner removing oxide, dust, etc.
3) Test the connection from power box, otherwise the button from power box is defective or clean with special spray contacta. unplugged the power box. and try.
4) if the problem persist you must go to the repair shop TV for fix it.

God bless you

Jun 28, 2012 | Televison & Video

3 Answers

Need to find out a part # for my philips 52PFL7403/f7 for the ir sensor


Join Date: Nov 2011 I have a Philips 47PFL3603D/F7 with the same problem. It was the IR sensor board causing the problem. You can search online to find the board, which almost everyone will most likely not have in stock, and cant be ordered. The part you need is this: 313926859181 IR Remote Sensor.

Models it will fit are as follows: Substitute Parts 313926859182
Known Models
MAGNAVOX 42MF438B/27
MAGNAVOX 42MF438B/27
MAGNAVOX 42MF438B/F7
MAGNAVOX 52MF438B/27
MAGNAVOX 52MF438B/F7
PHILIPS 32PFL3403D/85
PHILIPS 42PFL3403D/27
PHILIPS 42PFL3403D/F7
PHILIPS 42PFL3603D/27
PHILIPS 42PFL3603D/F7
PHILIPS 47PFL3603D/27
PHILIPS 47PFL3603D/F7
PHILIPS 52PFL3603D/27
PHILIPS 52PFL3603D/F7

If you can find the board, great! A replacement board costs about $12.00. If you can't... we'll there is something you can try ; )

Either way, if you know it's the board, what's the harm in trying?

Remove the back from the TV. You can actually leave it on your stand to do this if you can spin it around to gain access to the back of it. Be sure to unplug everything first!!!

Looking at the back of the tv, the board will be located in the lower left side by the speaker. It will have 2 cables attached to it. Remove them, and take out the screw or two that holds it in place. There will be a plastic tab that keeps it in place also.

Take your fingernail and bend the tab back, and the board should come free. After that you should be holding the board in your hands. The side of the board with the connectors on it is the side you want to manipulate. There will be a tiny surface mounted capacitor beside one of the wire connection sockets. Take a utility knife and scrape it off/ you could use a soldering iron but it should come off very easy with a knife.

Plug it back in, and give it a try! If it works... great! If not, find a replacement board, and try that.

Hope it helps someone!!!! quote.gif

May 30, 2011 | Philips 52PFL7403D 52 in. LCD HDTV

1 Answer

Magnavox 42 LCD 42mf438b/f7 turns on/off by itself sometimes screen goes blank tv unresponsive to remote


I have exactly the same problem with a Magnavox LCD 42", very similar model 42MF437B/37. I don't have a solution. If you unplug the TV and plug it back it starts working, sometimes for hours, sometimes for less than 5 minutes, before it turns off again. Does anyone have any real solution?

Jul 08, 2009 | SNK Magnavox 42MF438B/27 42 in. LCD TV

1 Answer

Magnavox 42 LCD 42mf438b/f7 turns on/off by itself


Mine was doing the same thing. Update the firmware and it fixes the problem. Updating the firmware is done by downloading the file to a thumb-drive from the phillips product support page then plugging in the drive into the side of your television and turning it on. See your manual for slightly better instructions.

Jul 08, 2009 | Philips Magnavox 50ML8105D 50" HDTV DLP TV

1 Answer

Iv got sound but with brite screen with flyback lines tryed ajust a1 tv goes in stand by


Try turning your screen down on your flyback. Adjust until no retrace lines

Apr 22, 2009 | Televison & Video

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